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Finding the Fourth Proportional to 708,289.35, 977,410.80 and 385,992.49

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Solution

The fourth proportional to 708,289.35, 977,410.80 and 385,992.49 is: 532,654.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,289.35 : 977,410.80 = 385,992.49 : x
  2. Step 2: Convert to fraction form
    708,289.35/977,410.80 = 385,992.49/x
  3. Step 3: Cross multiply
    708,289.35x = 977,410.80 × 385,992.49
  4. Step 4: Simplify right side
    708,289.35x = 377,273,226,001.37
  5. Step 5: Solve for x
    x = 377,273,226,001.37/708,289.35
  6. Step 6: Final answer
    x = 532,654.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.